Boiler-furnace.



No. 748,374. 'PATENTI-JID DEC. 29, 1903. 0. HENRY & R. A. DILLON.

2 SHEETS-SHEET 1 N0 MODEL.

THE NORRIS Pcrsns co, wuo oumu. WASHINGTON, n. c

No. 748,374. PATENTED DEC. 29, 1903.

c. HENRY & R. A. DILLON.

BOILER FURNACE.

APPLICATION FILED MAY 18. 1903.

N0 MODEL. 2 SHEET in: racnms PETERS 00.. PNDTO-LITKL wasnmcnon, 9:0.

UNITED STATES Patented December 29, 1903.

PATENT OFFICE.

.BOlLER- FU RNACE..

SPECIFICATION forming part of Letters Patent No. 748,374, dated December29, 1903.

Application filed May 18, 1903.

To all whom it may concern: I

Be it known that we, CLAY HENRY and ROBERT A. DILLON, citizens of theUnited States of America, and residents of Cincinnati, in the county ofHamilton and State of Ohio, have invented certain new and usefulImprovements in Boiler-Furnaces, of which the following is aspecification.

This invention relates to certain improvements in steam-boiler and othersimilar furnaces employed for burning soft coal as a fuel;

made simpler, cheaper, and otherwise better adapted and more convenientfor use, all as 'w ltt't'ie hereinaftenfuiify set forth.

The novel features of the invention will be carefully defined in theclaims.

In the accompanying drawings, which serve toillustrate our invention,Figure l is a vertical section taken through the lower parts of theimproved furnace, the plane of the sec-. tion being parallel with thelength of the boiler; and Fig. 2 is a partial side elevation of the improved furnace, showing certain features of the feed-water-heatingdevices. Fig. 3 is a detached perspective view showing a form of tileadapted for use in the improved furnace, and Fig. 4 is a similar viewshowing still another form of tile for use in the furnace. Fig. 5 is apartial'front elevation of the improved furnace, one side portionthereof being broken out and shown in sect-ion in a vertical planeindicated by the line a a in Fig. 2.

In the views, 1 indicates the front wall, and

' 1 the side or end wall, of the improved furmace, and 2 indicates theboiler,which may be of any kindmounted in any way.

3 indicates the fire-box, and 4 the ash-pit,

and 5 indicates the bridge-wall, located at the Serial No. 157,607. (Nomodel.)

rear of the fire-box and extended up in the usual way to near the lowerpart of the boiler 2.

6 represents-a grate arranged at the forward part of the fire-box andslightly inclined downward from front to rear, and 7 indicates adump-grate located behind the grate 6 and designed to receive the fuelafter it has passed rearward off said grate 6. The

which purpose a lever 7 is provided, as indicated at the right in Fig.5, this lever permitting of dumping the grate 7, so that refuse may bepermitted to fall from it into the ashpit to prevent clogging of thefire.

8 indicates the fire-door at the front of the furnace and affordingaccess to the fire-box 3 for stoking and stirring the fire, and 9indicates the door affording access to the ashpit for removal of ashes.These doors 8 and 9 are provided with dampers in a well-known way, sothat air maybe admitted for promoting combustion.

10 indicates another door formed in the front wall of the furnace andafiording access intothe same, and 11 indicates still another door inthe furnace-front above door 10 and alfording access to an air-chamberwithin the furnace and above the magazine and fire-box and designed tosupply an auxiliary volume of air to the fuel being fed from themagazine, so that a complete combustion of said fuel is efiected and theformation of soot and green smoke and emission thereof from the furnaceare prevented.

20 indicates the magazine, and 23 indicates the air-chamber above themagazine, and these parts are usually arranged at a sharp inclinationdownward from the front of the furnace, so that the fuel may be fed bygravity into the fire-box.

The magazine and air-chamber are formed between parallel walls orpartitions 18, 19, and 22, each of which walls or partitions is made upof tiles 13, having the general conformation shown in Fig. 3, beingprovided at their ends with concave recesses 13, adapted to engage andfit over the upper side portions of metal tubes or supports 12 12,extended transversely across the furnace from one to a fuel-magazinearranged above the fi s- :m. elm/WM tox m ss foun ain Large of fueldump-grate 7 is capable of being dumped, for p side wall I to the other,the extremities of said metal tubes or supports being through andembedded in the said end walls 1*, as indicated in Fig. 5. There is anin- 5 clined series of tubes 12 for each of the walls to 21, formedsimilarly to the walls or partitions 22, 19, and 18 above referred toand designed to lead the fuel escaping at the lower endof thefuel-magazine forward and downward to the front of the grate 6, on whichsaid fuel is deposited, as indicated in Fig. 1, and is permitted tospread out within the flre-box forits proper consumption.

At the forward end of the grate 6 a tile 14 is arranged, supportedbetween a tube 12 and 20 the front wall of the furnace, to prevent thefuel from dropping into the ash-pit, and above this tile or partition14, and at the front or fire-door 8 of the fire-box is produced acoking-chamber 15, the top wall of which is formed of a partition 16, oftile, supported 5 grate 6.

upon tubes 12, as above described.

The lower wall or floor 18 of the fuel-magazinc is arranged to meet thetop wall 16 of the coking-chamber 15 at a sharp angle, and

0 for simplicity and convenience the meeting portions of these two wallsor partitions are formed of angularly-shaped tiles 17, as shown inFig. 1. A somewhat similar form of tile is employed for forming themeeting portions 5 of the upper wall 22 of the air or draft chamber 23and of the deflecting wall or partition 21, this form of tile beingindicated at 24 in Figs. 1 and 4; and having recesses 24 somewhat likethe recesses 13 of tiles 13 and 0 adapted to receive and fit upon thetubes 12.

25 indicates a baffle-plate arranged at the PD i fidflwelLanc si s9&1 todeflect the flames and hot gases forward beneath the boiler 2, and thisbaffle-plate 25 5 is, like the walls and partitions above referred to,formed from tiles 13, supported on tubes 12 12, extended across thefurnace.

In the use of the improved furnace when the fire is lighted and themagazine supplied with fuel it is evident that the fuel will run downthe inclined floor of the magazine 20 and be guided by thedeflecting-wall 21 to the coking-chamber 15, at which point it fallsfrom the deflecting-wall 21 upon the The fuel burning at the grate willgenerate flames and hot gases, for the consumption of which air willflow through the grate, as indicated by the arrows in Fig. 1, and theheat thus generated will be partially 6o transmitted up through the fuelresting upon the deflecting-wall 21 in such a way as to convert suchfuel into coke, the gases produced in the coking of such fuel beingcarried along by the downward draft of air from the draftchamber 23 andsupplied at the point of combustion at the grate 6, so as to becompletely consumed. By this means it will be evident passed no smoke orsoot is permitted to escape from the furnace, since the fuel is cokedand deprived of its surplus gas while contained in the coking-chamber 15and as a preliminary to being supplied upon the grate, and the gasesproduced by this coking process are supplied at the grate, so as to beentirely consurned.

In practice we prefer to employ certain of the pipes or tubes 12 asportions of a feedwater-heating means, choosing for this purpose thosetubes which are directly exposed to the heat and causing a current ofwater to flow through them, so as to keep the tubes from burning out andalso at the same time utilize the abstracted heat for heating thefeed-water.

As shown in Figs. 2 and 5, the tubes 12 have nipples 12 upon their ends,and these nipples are connected by couplings 12 in such a way as toprovide a continuous channel for the flow of the feed-Water. One end ofthis channel has connection, as shown at 12, with a feed-pipe, and theother end has connection with a boiler-feed pipe'l2 as indicated in Fig.2.

From the above description it will be seen that the improved furnaceconstructed according to our invention is of an extremely simple andinexpensive nature and is adapted for use with a complete elimination ofthe soot and green smoke commonly emitted from similar furnaces, so thatthe device is especially well adapted for use. The arrangement of theimproved furnace with its passages and chambers formed betweenpartitions or walls of tiles supported upon tubes is also extremelysimple and convenient, and the employment of those tubes exposed to heatas portions of a feed-water heater increases the life of the furnace andalso eftion thereof. 7

It will also be obvious from the above description that the device iscapable of considerable modification without material departure from theprinciples and spirit of the invention, and for this reason we do notwish to be understood as limiting ourselves to the precise form andarrangement of the several parts of the device as herein set forth incarrying out the invention in practice.

Having thus described our invention, wha we claim, and desire to secureby Letters Patent, is

l. Afurnacehavinga fire-box provided with adoor at thefurnace-front,acoking-chamber, the floor of which is inclined downwardtoward the furnace-front, said chamber being arranged to discharge intothe fire-box, a fuelmagazine above the fire-box with its floor in-'olined downward toward the rear part of the furnace, said magazine beingarranged to discharge into the upper part of the cokingchamber and meansfor passing a draft of air through the fuel in the coking-chamber andinto the fire-box.

.iects a very ateria economy in the Opera? 2. A fu rnace havingafire-box provided with adoor at the furnace-front, a coking-chamber thefloor of which is inclined downward toward the furnace-front, saidchamber being arranged to discharge into the fire-box,a fuelmagazineabove the fire-box withits floor inclined downward toward the rear partof the furnace, said magazine being arranged to discharge into the upperpart of the cokingchamber and a draft-chamber above the magazine andalso havingits floor inclined-downward toward the rear of the furnaceand having its lower end arranged for communication with the upper partof the coking-chamher.

3. A furnace having a fire-box and having at its forward part and abovethe fire-box a plurality of inclined walls forming between them afue'Lmagazine above the fire-box and a draft-chamber above the magazine,the furnace-front having at different levels doors communicating withthe fire-box, magazine and draft-chamber, and a reversely-inclined wallarrangedwithin the furnace and adapted to receive the fuel dischargedfrom the magazine and to deflect it toward the forward part of thefire-box.

4. A furnacehaving a fire-box provided with a door at the furnace-front,a partition above the fire-box and inclined from the furnacefrontdownward toward the rear part of the fire-box, said partition forming afuel-magazine above it and the said fuel-magazine having a door at thefurnace-front and another partition reversely inclined with relation tothe first-mentioned partition and arranged with its upper end adapted 10receive fuel from the magazine and its lower part inclined downwardtoward the furnace-front and adapted to discharge fuel into the firebox.

Signed at Cincinnati, Ohio, this 14th day of May, 1903.

CLAY HENRY. 7 ROBERT A. DILLON. Witnesses:

JOHN ELIAS JONES, WILLIAM SOHUCHARDT.

